◍ (47584+16759)-a = 28435
64343-a = 28435
a = 64343-28435
a = 35908
◍ 90842-a = 74370+5728
90842-a = 80098
a = 90842-80098
a = 10744
◍ (503421-205642)-a = 56432
297779-a = 56432
a = 297779-56432
a = 241347
◍ (123234+135357)+a = 507893
258591+a = 507893
a = 507893-258591
a = 249302
◍ a+(14029+76343) = 230495
a+90372 = 230495
a = 230495-90372
a = 140123
◍ a-(53870+92146) = 143867
a-146016 = 143867
a = 143867+146016
a = 289883
◍ (214987+58013)-a = 187685
273000-a = 187685
a = 85315
◍ a-(365478-278073) = 212454
a-87405 = 212454
a = 212454+87405
a = 299859
